This is a milled composite unit- 3 casements. Here's a lot of info for you. Good luck!

Casement/Awning Label: KITCHEN

Unit Shape/Build Options

Not Impact Certified

Casement Style

Dimension Details

Width: 20" (508mm)

Finish Options

Sash: Sash Color Matches Frame Color

Int Sash/Panel: Matches Frame

Unit Operation/Type

Left Hand Operation

Traditional Operation

Standard Moldings

Double Sash

Glazing Options

Double 366-Clear

Inboard Lite Tempered

3 MM Glass Thickness

Black Stainless Steel Spacer

Black Bar(63) 1/2"(13mm)

Preserve Film on INT & EXT

Interior Square Glazing Stops

Grille Options

SDL Grille

Colonial Grille

2W3H Pattern

Putty Exterior Profile

Square Interior Profile

5/8" (16mm)

5/8" (16mm)

Grille Color Matches Sash Color

Int Grille: Matches Sash

1 Airspace With Shadow Bars

Deep Shadow Bar

Grille is a Standard Pattern

Number of Rectangle Lites: 6

Hardware Options

Encore Rotogear

Concealed Locking Hdwr (Encore)

C/W Crank Handle & Operator Cover

Tango Cover

Stainless Steel Hdwr Required

Hardware Color: Matte Black

Screen Options

STD Aluminum Screen

Steel Matte Black (Std)

Less Visible Screen (High Trans)

Miscellaneous Options

Cubes: 6

Performance Data

Not Impact Certified

Untested Species: See custom shop

warranty

Egress Area (sqft): 3.46

10 13/16

46 3/32

Frame Size : 60" (1524mm) x 51" (1295mm) Casing Not Required

Rough Opening : 60 3/4" (1543mm) x 51 23/32" (1314mm)

Thank you for all of this information! So the entire window with the trim is 60" wide X 51" tall? Thank you again!

Yes, in this case, what looks like the trim is the body of the window, as we had these drywalled, a “caseless” opening.

Okay thank you so much!